Automation System
Most data transmission in the future will be:

carried over metallic telephone lines
digital bit stream encoded data
All of these
None of these
analog in nature

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Automation System
The SKETCHPAD system

All of these
None of these
is expensive because it is sophisticated and make demands on the power and resources of the computer.
is used for interactive Graphics
consisted of an cathode-ray oscilloscope driven by a Lincoln Tx2 computer where by graphical information was displayed on the screen.

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